<template>
  <div class="singer">
    <ul class="singer-header">
      <li v-for="(item,index) in singerStyle" :key="index" @click="handleChangeView(item)" 
        :class="{active:item.name==activeName}">
        {{item.name}}
      </li>
    </ul>
    <div>
      <content-list :contentList="data"></content-list>
      <div class="pagination">
        <el-pagination @current-change="handleCurrentChange" background layout="total,prev,pager,next"
          :current-page="currentPage" :page-size="pageSize" :total="albumDatas.length">
        </el-pagination>
      </div>
    </div>
  </div>
</template>

<script>
import ContentList from '@/components/ContentList.vue'
import {getAllSinger,getSingerOfSex} from '@/api/index'
import {singerStyle} from '@/assets/data/singer';
import {mixin} from '@/mixins'
export default {
    name: 'singer',
    components: {
      ContentList
    },
    mixins: [mixin],
    props: {},
    data () {
      return {
        albumDatas: [],         // 歌手数据
        pageSize: 15,           // 页面大小，一页有15条数据
        currentPage: 1,         // 当前页，默认第一页
        singerStyle: [],        // 风格
        activeName: '全部歌手'   // 当前风格
      }
    },
    computed: {
      // 计算当前表格中的数据
      data(){
        return this.albumDatas.slice((this.currentPage - 1)*this.pageSize,this.currentPage*this.pageSize)
      }
    },
    watch: {},
    created () {},
    mounted() {
      this.singerStyle = singerStyle;
      this.getSingerList();
    },
    methods: {
      // 获取歌手数据
      getSingerList() {
        getAllSinger().then(res => {
          this.currentPage = 1;
          this.albumDatas = res;
        })
      },
      // 获取当前页
      handleCurrentChange(val){
        this.currentPage = val;
      },
      //根据style显示对应的歌单
      handleChangeView(item){
        this.activeName = item.name;
        this.albumDatas = [];
        if(item.name == '全部歌手'){
          this.getSingerList();
        }else{
          this.getSingerOfSex(item.type)
        }
      },
      //根据性别查询对应的歌手
      getSingerOfSex(sex){
        getSingerOfSex(sex)
        .then(res =>{
          this.currentPage = 1;
          this.albumDatas = res;
        }) 
      }
    }
}
</script>
<style lang="scss" scoped>
@import '../assets/css/singer.scss';
</style>